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    Electrostatics of Capacitors

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    A) Argue that the energy stored in the electric field of such a capacitor is Ufield=1/2CVo2, if Vo is the potential difference. (Hint: Argue that between the plates, the field strength is EVo/d, where dRo -RI is the distance between the conductors. Use the equation for the capacitance of a nested sell capacitor and the fact that Ro  Ri, to eliminate d in the equation for E in favor of C. Roughly how much volume does this field occupy?)

    b) Imagine we discharge this capacitor by connecting its plates with a wire of resistance R. The rate at which thermal energy is produced in the wire at any given instant of time is..
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    Solution Summary

    Going from basic definitions and using integration this solution calculates the electrostatic energy stored in a nested concentric spherical capacitor.